formula to subtract percentage from whole

I want to be able to create a forumla to increase or decrease the percentage
of a whole number i.e. Nett: 81.47 increase by 15% to give me the total and
vice versa 92.27 decrease by 15% (I can do this on the calculator). Formula
NOT reliant on other cells.
Appreciate your help

Hi,
in the cell where you want the result enter
to increase
=A1*1.15
to decrease
=A1/1.15
"Shevvie" wrote:
> I want to be able to create a forumla to increase or decrease the percentage
> of a whole number i.e. Nett: 81.47 increase by 15% to give me the total and
> vice versa 92.27 decrease by 15% (I can do this on the calculator). Formula
> NOT reliant on other cells.
>
> Appreciate your help

"Shevvie" wrote:
> I want to be able to create a forumla to increase
> or decrease the percentage of a whole number i.e.
> Nett: 81.47 increase by 15% to give me the total
> and vice versa 92.27 decrease by 15% (I can do
> this on the calculator). Formula NOT reliant on other
> cells.
=81.47*(1+15%)
=92.27*(1-15%)